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Texas Instruments SN74ALVTH162244GR
- Part No.:
- SN74ALVTH162244GR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74ALVTH162244GR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,132
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Product details
Overview
SN74ALVTH162244GR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 2.5-V/3.3-V operation and mixed-mode (5-V input-tolerant) interfacing. It features bus-hold circuitry on all data inputs, integrated 30-Ω output series resistors, and auto 3-state functionality. It supports industrial temperature range (–40°C to 85°C) and is packaged in a 48-pin TSSOP (DGG).
For engineers reviewing the SN74ALVTH162244GR datasheet, SN74ALVTH162244GR pinout, SN74ALVTH162244GR application, or SN74ALVTH162244GR equivalent, this device is selected for low-voltage bus buffering in backplane, memory interface, and level-translating I/O expansion systems where power-up/down high-impedance safety and ground-bounce suppression are critical.
Technical Context
The SN74ALVTH162244GR implements four independent 4-bit buffer sections, each with symmetrical active-low output-enable (OE) control and true (noninverting) logic. Its Advanced BiCMOS Technology (ABT) enables low static power dissipation while supporting TTL-level inputs at 5 V with VCC as low as 2.3 V.
Each output includes an integrated 30-Ω series resistor to suppress overshoot/undershoot, and bus-hold circuitry eliminates external pullup/pulldown resistors on unused inputs. Power-off output disable and high-impedance state below 1.2 V VCC support live insertion and safe hot-swap operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - Enables dual-supply compatibility across 2.5-V and 3.3-V system domains. |
| Input Voltage Tolerance | 0 V to 5.5 V - Supports direct connection to 5-V TTL buses without level-shifting circuitry. |
| Output Drive Strength | IOL = 12 mA / IOH = –12 mA at VCC = 3.3 V - Sufficient for driving moderate-capacitance PCB traces and multiple CMOS loads. |
| Propagation Delay | tPLH/tPHL ≤ 3.3 ns (CL = 50 pF, VCC = 3.3 V) - Meets timing requirements for high-speed 16-bit parallel interfaces. |
| Bus-Hold Current | IBHL = 75 µA / IBHH = –75 µA at VCC = 3 V - Actively holds floating inputs at valid logic levels without external components. |
| Output Series Resistance | 30 Ω (integrated) - Reduces signal ringing and EMI; eliminates need for discrete series termination resistors. |
| Power-Up High-Impedance | Active below VCC = 1.2 V - Prevents bus contention during supply ramp-up or brownout conditions. |
Pinout & Package
SN74ALVTH162244GR is housed in a 48-pin Thin Shrink Small-Outline Package (TSSOP, DGG), 12.6 mm × 6.2 mm × 1.2 mm max height, JEDEC MO-153 compliant, with gull-wing leads and 0.5-mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable control | Independent enable per 4-bit section; drives corresponding Y outputs to high-Z when high. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs | 16 total inputs with integrated bus-hold; tolerate 0–5.5 V regardless of VCC. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | True buffered outputs | 16 outputs with 30-Ω series resistance; sink/source up to ±12 mA; auto 3-state above VCC + 0.5 V. |
| VCC (Pins 7, 20, 31, 44) | Supply voltage | Distributed power pins minimize switching noise; supports 2.3–3.6 V operation. |
| GND (Pins 4, 10, 15, 23, 27, 32, 37, 42) | Ground reference | Eight GND pins provide low-inductance return paths for high-speed switching currents. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5-V tolerant inputs with 2.3–3.6 V VCC - Enables seamless interconnection between legacy 5-V logic and modern low-voltage subsystems. |
| Integrated bus-hold circuitry | Holds all 16 data inputs at valid logic levels without external resistors - reduces BOM count and board space. |
| Auto 3-state protection | Outputs automatically enter high-impedance when VO exceeds VCC + 0.5 V - prevents latch-up and overvoltage damage during hot-plug events. |
| Flow-through pinout architecture | Inputs and outputs arranged on opposite sides of package - simplifies PCB routing and minimizes trace crossovers. |
| Low ground bounce (VOLP) | < 0.8 V at VCC = 3.3 V, TA = 25°C - Ensures signal integrity in dense, high-speed parallel bus environments. |
Applications
| Backplane Data Buffering | Memory Interface Expansion |
|---|---|
Use Scenario: Isolating and driving address/data lines between CPU and peripheral slots in modular industrial backplanes. IC Role / Device Role / Timing Role: 16-bit unidirectional buffer with 3-state control enabling slot-selective bus access and hot-swap-safe isolation. Use Value: Distributed VCC/GND pins and flow-through layout reduce simultaneous switching noise; bus-hold prevents floating states during slot removal/insertion. |
Use Scenario: Extending SRAM or Flash memory data/address bus width in embedded controllers with limited native I/O. IC Role / Device Role / Timing Role: True-output buffer providing TTL-compatible drive strength and sub-4 ns propagation delay for reliable memory read/write timing margins. Use Value: Integrated 30-Ω output resistors eliminate external termination, preserving signal integrity across multi-inch PCB traces to memory devices. |
| Legacy System I/O Translation | Industrial PLC I/O Module |
Use Scenario: Interfacing 5-V sensor/actuator modules to a 3.3-V microcontroller-based mainboard in factory automation equipment. IC Role / Device Role / Timing Role: Level-translating buffer with 5-V input tolerance and 3.3-V output swing, supporting bidirectional data flow via OE-controlled direction. Use Value: Eliminates need for discrete level shifters; bus-hold ensures stable inputs during sensor cable disconnect or open-circuit faults. |
Use Scenario: Driving LED indicators, relay drivers, or optocoupler inputs from a 3.3-V FPGA or MCU in programmable logic controller modules. IC Role / Device Role / Timing Role: High-current (±12 mA) 3-state driver with power-down high-Z behavior ensuring no unintended actuation during firmware boot or reset sequences. Use Value: Auto 3-state and <1.2 V power-up high-Z guarantee safe startup; latch-up immunity (>250 mA) withstands industrial transient exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADGGR | Lower drive (±24 mA), no bus-hold, 1.65–3.6 V VCC, same 48-pin TSSOP | Lacks 5-V input tolerance and auto 3-state; requires external pullups if inputs float | Choose when cost sensitivity outweighs mixed-voltage robustness and bus-hold convenience. |
| SN74ALVCH162244GR | No 5-V input tolerance (VI max = VCC + 0.3 V), identical pinout and bus-hold | Not suitable for direct 5-V bus interfacing; requires external level translation in mixed-voltage systems | Choose only in pure 2.5/3.3-V systems where 5-V tolerance is unnecessary and lower ICC is prioritized. |
Compared with SN74LVC16244ADGGR and SN74ALVCH162244GR, the SN74ALVTH162244GR uniquely delivers 5-V input tolerance, auto 3-state, and bus-hold in one package-making it irreplaceable for legacy-to-modern interface bridging without added components or layout complexity.
Availability
SN74ALVTH162244GR is available at Aetrix Electronics and suitable for industrial control systems, memory expansion modules, and backplane interface designs requiring stable component supply and long-term obsolescence management.
Supply support for SN74ALVTH162244GR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of innovation in logic, interface, and power management ICs.
The SN74ALVTH162244GR belongs to TI's ALVTH advanced logic family, engineered specifically for robust mixed-voltage system interfacing in industrial, communications, and computing infrastructure applications.
FAQ
What is the operating temperature range for the SN74ALVTH162244GR?
The SN74ALVTH162244GR is characterized for operation from –40°C to +85°C, meeting industrial-grade environmental requirements. This range is explicitly specified in the SCES074E datasheet under recommended operating conditions for the SN74ALVTH162244 variant, and confirmed by TI's packaging documentation for the DGG package.
Does the SN74ALVTH162244GR support 5-V input signals while powered from 3.3 V?
Yes, the SN74ALVTH162244GR supports input voltages up to 5.5 V regardless of VCC (2.3–3.6 V), enabling direct connection to 5-V TTL buses without level shifters. This 5-V input tolerance is documented in both absolute maximum ratings and recommended operating conditions tables in the SCES074E datasheet.
How does the bus-hold feature work on the SN74ALVTH162244GR?
The SN74ALVTH162244GR integrates active bus-hold circuitry on all 16 data inputs, sinking 75 µA at VI = 0.8 V or sourcing –75 µA at VI = 2.0 V (VCC = 3 V). This holds unused or unterminated inputs at valid logic levels, eliminating the need for external pullup/pulldown resistors and preventing metastability.
What is the purpose of the auto 3-state function in the SN74ALVTH162244GR?
The auto 3-state function in the SN74ALVTH162244GR disables outputs when any output voltage exceeds VCC + 0.5 V. This protects against overvoltage conditions during hot-plug events or bus conflicts, and is implemented internally-no external circuitry is required to achieve this safety behavior.
Is the SN74ALVTH162244GR pin-compatible with other 48-pin TSSOP 16-bit buffers?
The SN74ALVTH162244GR has a unique flow-through pinout optimized for PCB layout, differing from standard 16-bit buffers like the SN74LVC16244A. While both use 48-pin TSSOP (DGG), their pin assignments for inputs, outputs, and enables are not identical-direct replacement requires verification of signal mapping and layout adaptation.
SN74ALVTH162244GR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVTH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 12mA; 12mA, 12mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74ALVTH162244GR FAQ
1.How can I place an order for SN74ALVTH162244GR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVTH162244GR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74ALVTH162244GR reliable?
The price and inventory of SN74ALVTH162244GR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVTH162244GR is usually 5 days.
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Once your SN74ALVTH162244GR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74ALVTH162244GR?
For technical support, including SN74ALVTH162244GR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVTH162244GR requirements.
6.How does Aetrix verify that SN74ALVTH162244GR is sourced from the original manufacturer or authorized distributors?
All SN74ALVTH162244GR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74ALVTH162244GR meets industry standards.
7.What is the process for return or replacement of SN74ALVTH162244GR?
All SN74ALVTH162244GR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVTH162244GR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74ALVTH162244GR part is unused and in its original packaging.
Return procedure for SN74ALVTH162244GR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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